/* HotelSync Widget Loader — https://hotelsync.ru */
(function () {
  var s = document.currentScript || (function () {
    var t = document.getElementsByTagName('script');
    return t[t.length - 1];
  })();

  var url   = s.getAttribute('data-url') || '';
  var mode  = s.getAttribute('data-mode') || 'floating';   // 'floating' | 'trigger'
  var btn   = s.getAttribute('data-btn') || 'Забронировать';
  var color = s.getAttribute('data-color') || '#4F46E5';
  var cls   = s.getAttribute('data-class') || 'hotelsync-book';

  function init() {
    /* ── Modal ── */
    var modal = document.createElement('div');
    modal.style.cssText = [
      'display:none', 'position:fixed', 'inset:0',
      'background:rgba(0,0,0,.65)', 'z-index:99999',
      'align-items:center', 'justify-content:center',
      'padding:16px', 'box-sizing:border-box',
    ].join(';');

    var inner = document.createElement('div');
    inner.style.cssText = [
      'position:relative', 'width:100%', 'max-width:520px',
      'border-radius:20px', 'overflow:hidden',
      'box-shadow:0 24px 80px rgba(0,0,0,.45)',
    ].join(';');

    var closeBtn = document.createElement('button');
    closeBtn.innerHTML = '×';
    closeBtn.style.cssText = [
      'position:absolute', 'top:10px', 'right:10px', 'z-index:1',
      'width:32px', 'height:32px', 'border-radius:50%',
      'background:rgba(0,0,0,.55)', 'color:#fff',
      'border:none', 'cursor:pointer', 'font-size:20px',
      'font-weight:700', 'line-height:1',
      'display:flex', 'align-items:center', 'justify-content:center',
    ].join(';');
    closeBtn.onclick = function () { modal.style.display = 'none'; };

    var iframe = document.createElement('iframe');
    iframe.src = url;
    iframe.setAttribute('allow', 'payment');
    iframe.style.cssText = 'width:100%;height:680px;border:none;display:block;';

    inner.appendChild(closeBtn);
    inner.appendChild(iframe);
    modal.appendChild(inner);
    modal.addEventListener('click', function (e) {
      if (e.target === modal) modal.style.display = 'none';
    });
    document.body.appendChild(modal);

    window.hsOpenWidget = function () { modal.style.display = 'flex'; };

    /* ── Floating button ── */
    if (mode === 'floating') {
      var fab = document.createElement('button');
      fab.textContent = btn;
      fab.style.cssText = [
        'position:fixed', 'bottom:24px', 'right:24px',
        'background:' + color, 'color:#fff',
        'border:none', 'padding:14px 26px',
        'border-radius:50px', 'font-size:15px',
        'font-family:inherit', 'font-weight:700',
        'cursor:pointer', 'z-index:99997',
        'box-shadow:0 4px 20px rgba(0,0,0,.28)',
        'transition:transform .15s,box-shadow .15s',
      ].join(';');
      fab.onmouseenter = function () {
        fab.style.transform = 'scale(1.06)';
        fab.style.boxShadow = '0 8px 28px rgba(0,0,0,.38)';
      };
      fab.onmouseleave = function () {
        fab.style.transform = 'scale(1)';
        fab.style.boxShadow = '0 4px 20px rgba(0,0,0,.28)';
      };
      fab.onclick = function () { window.hsOpenWidget(); };
      document.body.appendChild(fab);
    }

    /* ── Class trigger ── */
    if (mode === 'trigger') {
      document.addEventListener('click', function (e) {
        var el = e.target;
        while (el) {
          if (el.classList && el.classList.contains(cls)) {
            e.preventDefault();
            window.hsOpenWidget();
            return;
          }
          el = el.parentElement;
        }
      });
    }
  }

  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', init);
  } else {
    init();
  }
})();